【Certified Filling】We comply with Responsible Down Standard(RDS) to harvest filling. Responsibly-harvested goose down fibers and feather fibers fillings are filled in the duvet. Odorless 750+ fill power provides you a hotel quality goose feather down comforter. Thermal insulation filling ensues a fluffy comforter.,【Soft Percale】Breathable cotton fabric is Global Organic Textile Standard and OEKO-TEX Standard 100 certified. Double pre-shrinkage processes ensure the cotton fabric to have ultra soft touch. 400 thread count down-proof fabric ensures no filling leakage. The duvet is noiseless when you toss and turn at night.,【Exquisite Details】Box stitching design make the filling distribute evenly in every box and no clumping. 4 corner tabs & 4 side loops can easily attach a duvet cover and ensure your duvet no shifting. Enhance-sewed stitching make the down fiber comforter durable for use.,